Added option for annotation tooltip to be floating (follows mouse, current functionality) or fixed (stationary per annotation).

lib/ace/editor.js

@@ -1029,6 +1029,18 @@ var Editor = function(renderer, session) {
     this.getHighlightGutterLine = function() {
         return this.getOption("highlightGutterLine");
     };
+
+    /**
+     * Determines if the annotation tooltip follows the mouse or is stationary to the annotation.
+     * @return {Boolean}
+     **/
+    this.setTooltipFollowsMouse = function(tooltipShouldFollowMouse) {
+        this.setOption("tooltipFollowsMouse", tooltipShouldFollowMouse);
+    };
+    this.getTooltipFollowsMouse = function() {
+        return this.getOption("tooltipFollowsMouse");
+    };
+
     /**
      * Determines if the currently selected word should be highlighted.
      * @param {Boolean} shouldHighlight Set to `true` to highlight the currently selected word
@@ -2432,6 +2444,7 @@ config.defineOptions(Editor.prototype, "editor", {
     dragDelay: "$mouseHandler",
     dragEnabled: "$mouseHandler",
     focusTimout: "$mouseHandler",
+    tooltipFollowsMouse: "$mouseHandler",
 
     firstLineNumber: "session",
     overwrite: "session",

lib/ace/mouse/default_gutter_handler.js

@@ -96,7 +96,16 @@ function GutterHandler(mouseHandler) {
         tooltip.innerHTML = tooltipAnnotation;
         editor.on("mousewheel", hideTooltip);
 
-        moveTooltip(mouseEvent);
+        if (mouseHandler.$tooltipFollowsMouse) {
+            moveTooltip(mouseEvent);
+        } else {
+            gutterElement = gutter.$cells[row].element;
+            var rect = gutterElement.getBoundingClientRect();
+            var tooltipLeft = rect.right;
+            var tooltipTop = rect.top + Math.round(rect.height / 2);
+            tooltip.style.left = tooltipLeft + "px";
+            tooltip.style.top =  tooltipTop - 5 + "px";
+        }
     }
 
     function hideTooltip() {
@@ -127,7 +136,7 @@ function GutterHandler(mouseHandler) {
         if (dom.hasCssClass(target, "ace_fold-widget"))
             return hideTooltip();
 
-        if (tooltipAnnotation)
+        if (tooltipAnnotation && mouseHandler.$tooltipFollowsMouse)
             moveTooltip(e);
 
         mouseEvent = e;

lib/ace/mouse/mouse_handler.js

@@ -153,7 +153,8 @@ config.defineOptions(MouseHandler.prototype, "mouseHandler", {
     scrollSpeed: {initialValue: 2},
     dragDelay: {initialValue: 150},
     dragEnabled: {initialValue: true},
-    focusTimout: {initialValue: 0}
+    focusTimout: {initialValue: 0},
+    tooltipFollowsMouse: {initialValue: true}
 });